Paving-block



A. L. BAUGHMAN.

PAVING BLOCK.

APPLICATION FILED JUNE 26.1919.

Patented Aug. 3, 1920.

m n m m v UNITEDSTATES PATENT OFFICE.

AL'roN L. BAUGHMAN, onwonnLAKn, INDIANA.

PAVING-BLOCK.

Application filed June 26,

To all whom it may concern-.-

. Be it known thatI, ALTON L; BAUGHMAN, a citizen of the United States, residing at Wolf Lake, in the county of Noble and State of Indiana, have invented a new and useful Paving-Block, of which the following is a specification.

The device forming the subject matter of this application is a block adapted to be used in the making of a pavement, and one object of the invention is so to construct the block that when'one block is pushed downwardly at the side .of another block, the blocks will be spaced apart laterally to form a cement receivingv recess between the blocks and above cooperating transverse shoulders on the blocks, the construction being such that a ventilating space will be formed between the blocks, below the said shoulders.

The invention aims to provide a block so constructed that it may tilt or fulcrum, during the expansion of the pavement, without producing an abrupt hump in any one part of the pavement, the upward curve, due to the expansion of the pavement, beingdistributed fairly and evenly throughout the entire pavement.

A further object of the invention is so to construct the block that, in a pavement comprising a plurality of blocks, air spaces will exist between the blocks, ventilation being afforded, and the expansion and consequent bulging of the pavement being reduced to a, minimum.

Within the scope of what is claimed, a block-maker or road engineer may make changes, without departing from the spirit of the invention, or placing the utility of the invention in jeopardy.

In the drawings Figure 1 shows, in end elevation, a plurality of blocks constructed in accordance with the invention and placed in operative relation to each other.

Fig. 2 is a top plan of the block.

Fig. 3 is a side elevation of the block.

Fig. 4 is an end elevation, showing a plurality of blocks forming part of a pavement, the view illustrating the manner in which the blocks operate and cooperate when the pavement expands.

The block forming the subject matter of this application may be made of concrete, fictile material or any of the substances com- Specification of Letters Patent.

Patented Aug. 3, 1920. 1919. Serial No. 306,883.

monly employed in the manufacture of pav-. lng blocks. The block, denoted generally by the numeral 1, has an upper offset 2 and a lower offset 3 on its respective sides, the upper offset defining a downwardly facing shoulder 4, and the lower offset defining an upwardly facing shoulder 5. The block 1 is provided with approximately parallel laterally slanting surfaces 6 and 7 the surface 7 leading from the downwardly facing shoulder 4 to the adjacent side surface 8 of the block, below the shoulder 4, the surface 6 leading from the upwardly facing shoulder 5 to the adjacent side surface 9 of the block, above the shoulder 5.

In constructing a pavement out of blocks of the sort described, one block is pushed downwardly at the side of another block. The right angle formed by the shoulder 4 and the adjacent side surface 14 of the offset 2 rides along the slanting surface 7. Similarly,,thc right angle formed by the shoulder 5 and the adjacent side surface 12 of the offset 3 rides along the slanting surface 6, the shoulders 4 and 5 ultimately coming into contact. The blocks thus are spaced, so that, above the shoulders 4 and 5, and to one side thereof, there is formed, between the surface 14 of one block, and the opposite surface 9 of an adjoining block, a recess 16 in which cement 17 of the usual sort is placed. Below the shoulders 4 and 5, and to one side thereof, there is formed an open space 15. This space has two functions. One function of the space 15 is to admit air between the blocks, and because air is admitted between the blocks, the expansion of the pavement, due to superheating, will be reduced appreciably.

Passing to the second functionwhich the space 15 exercises, it is to be observed that the slanting surface 7 and the shoulder 5 define an obtuse angle 11 the right angle formed-by the shoulder 4 and the surface 14. Likewise, the shoulder 4 and the slanting surface 6 form an obtuse angle 10 receiving the right angle formed by the shoulder 5 and the surface 12. One block, therefore, is pivoted or fulcrumed on the other, so that when the pavement expands and curves upwardly, the curvature will be distributed evenly throughout the entire Width of the pavement from curb to curb, there being no abrupt hump including a single block or, at most, two or three blocks which the device.

are closely adjacent to each other. The space 15 gradually decreases in cross sectional area, during the expansion of the: pavement, and permits a' pivoting or fulcruming of one block upon anotheras above described.

The advantages oftheblock are that the blocks are spaced automatically,'when one block is pushed downwardly at the side'of another; that the blocks remain spaced at fixed distances; that 'theblocks can tilt or pivot on each other to accommodate expansion and contraction; that acement-reeeiving groove exists between the blocks; that the blocks are spaced to afford ventilation and to admit of relative tilting movement between the blocks; and that-the shoulders on the blocks cooperate to prevent the ce- Vment from running downwardly out of the air space reduces expansion approximately one-half. A saving of thirtypercentin theamo'unt of filler used is effected; The

pavement may be laid ten per cent. faster than is possible with other bricks.

brick is so constructed that it will sustain 'a heavier load than any otherbrick. Nosin- The gle brick can settle without carrying with it, every adjoining brick. The surface of the pavement always remains smooth and nsp re even, and the durability of. the pavement is promoted.

i I claim 1. A paving block having upper and lower offsets on itsrespective sides, the upper offset defining a downwardly facing shoulder, and

the lower offset defining an upwardlyfacing shoulder, the block being provided with approximately parallel laterally slanting surfaces leading respectively from the downwardly facing shoulder to the'adj acent side surface of the'block below the downwardly facing shoulder, and from the upwardly facing shoulder to the adjacent side surface of the block above the upwardly facing shoulder. r r

Y 2. A pavement comprising blocks having upper and lower offsets, forming, respectively, a. downwardly facing shoulder. in one block and an upwardly-facing shoulder in the other block, the shoulders cooperating with each other, the blocks havinglat- 'erally slanting surfaces leading from the shoulders, and defining, with the shoulders, obtuse angles constituting fulcra .for the blocks, said angles serving as stops separating the blocks'to form a ventilating space between the blocks and below and at one side of the shoulders, and to form a filler-receiving recess-between the blocks, above'and at the other side of the shoulders; and a filler ,inthe recess.

In testimony that I claim the foregoing asmy own, I'have' hereto affixed my signature in the presence of two witnesses.

BENEDICT LAWTON, IVY E. SIMPSON. 

